Define the CRDs for Service Catalog resources

[adamwalach]

Description
We should define the full working CRDs for Service Catalog.

NOTE:
Controller-manager is using the status-subresource on all ServiceCatalog resources.
Issue can be resolved by adding

subresources:
  status: {}

to do CRD definition.
This feature is in beta. Current design status can be found in this issue.

In POC we already did that and it worked without any problem.

Assumptions:

• k8s at least in version 1.11

AC

• Service Catalog CRDs defined
• status subresource available on all CRDs
• CRDs has static validation via OpenAPI v3 schema
• we know how we will install those CRDs (e.g. direct def in chart or in controller manager or sth else)
• custom columns out of scope, will be implemented in this issue: Replace TableConvertor with AdditionalPrinterColumns in SC #2790

[mszostok]

See also our doc about CRD: https://github.com/kyma-project/community/blob/master/guidelines/coding-standards/helm.md